CN212460936U - Teaching demonstration device for demonstrating current characteristics - Google Patents
Teaching demonstration device for demonstrating current characteristics Download PDFInfo
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- CN212460936U CN212460936U CN202021596395.3U CN202021596395U CN212460936U CN 212460936 U CN212460936 U CN 212460936U CN 202021596395 U CN202021596395 U CN 202021596395U CN 212460936 U CN212460936 U CN 212460936U
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- water pipe
- peristaltic pump
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- demonstration water
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Abstract
The utility model provides a teaching presentation device for demonstrating current characteristic, include: a base plate; the supporting plate is vertically fixed on the bottom plate; first demonstration water pipe and second demonstration water pipe are fixed in the backup pad, and first demonstration water pipe and second demonstration water pipe enclose into rectangular shape to first demonstration water pipe and second demonstration water pipe are at least in the part of the rectangular left and right sides and the partial route of top the same, and the flow direction of first demonstration water pipe and second demonstration water pipe normal water is opposite. Through above-mentioned device, make the current flow characteristic can audio-visual performance, the student can direct observation, and then understands easily, and the study is got up simply, high-efficient, makes things convenient for mr to teach.
Description
Technical Field
The utility model relates to a teaching equipment technical field particularly, relates to a teaching presentation device for demonstrating current characteristic.
Background
The free charges in the conductor make regular directional movement under the action of the electric field force to form current. Electrically stipulate that: the direction in which the positive charge is directed to flow is the direction of current flow. In engineering, the directional flowing direction of positive charges is taken as the current direction, and the intensity of the current is expressed by the charge Q flowing through the cross section of the conductor in unit time, and is called as the current intensity.
The current flowing characteristics of students need to be taught in physical teaching, and students are difficult to understand and learn due to the fact that the current characteristics are abstract, students cannot observe characteristics such as current flowing intuitively and the like.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the utility model provides a teaching presentation device for demonstrating current characteristic aims at improving and need impart knowledge to students to the current flow characteristic that carries out in physics teaching, because current characteristic is more abstract, the classmate can't audio-visual characteristics such as observing current flow, leads to the student to understand, study more difficult problem.
In order to achieve the above purpose, the utility model provides the following technical scheme: a teaching demonstration apparatus for demonstrating current characteristics, comprising:
a base plate;
the supporting plate is vertically fixed on the bottom plate;
first demonstration water pipe and second demonstration water pipe are fixed in the backup pad, and first demonstration water pipe and second demonstration water pipe enclose into rectangular shape to first demonstration water pipe and second demonstration water pipe are at least in the part of the rectangular left and right sides and the partial route of top the same, and the flow direction of first demonstration water pipe and second demonstration water pipe normal water is opposite.
Preferably, the supporting plate is a white board, and the first demonstration water pipe and the second demonstration water pipe are arranged on the front face of the white board.
Preferably, four supporting bodies are arranged on the supporting plate, the four supporting bodies are arranged at the positions of four corners of the rectangle, and the first demonstration water pipe and the second demonstration water pipe are sequentially wound on the four supporting bodies.
Preferably, the method further comprises the following steps:
the first liquid storage tank and the second liquid storage tank are supported on the bottom plate and can be used for storing liquid with different colors;
first peristaltic pump and second peristaltic pump support on backup pad or bottom plate, the one end of first demonstration water pipe with the liquid outlet of first peristaltic pump is connected, and the other end stretches into in the first liquid reserve tank, the inlet of first peristaltic pump is provided with first feed liquor pipe, the one end of keeping away from first peristaltic pump of first feed liquor pipe at least partially submerges into the liquid of first liquid reserve tank, and the one end of second demonstration water pipe is connected with the liquid outlet of second peristaltic pump, and the other end stretches into in the second liquid reserve tank, the inlet of first peristaltic pump is provided with second feed liquor pipe, the other end of second feed liquor pipe at least partially submerges into the liquid of second liquid reserve tank in, the rivers direction of first demonstration water pipe and the rivers opposite direction of second demonstration water pipe.
Preferably, floating balls are arranged at one end of the first liquid inlet pipe far away from the first peristaltic pump and one end of the second liquid inlet pipe far away from the second peristaltic pump, and the floating balls are configured to partially immerse one end of the first liquid inlet pipe far away from the first peristaltic pump and one end of the second liquid inlet pipe far away from the second peristaltic pump into the corresponding liquid.
Preferably, a frame is provided on the bottom plate and on the back of the support plate, the frame being aligned with the edge of the support plate as viewed in the front-rear direction.
Preferably, the left and right sides of frame all is fixed with the installation piece of two front and back alignments, and swing joint has the handle on two installation pieces, and the both ends of handle all are fixed with the stopper, and the stopper is located one side that deviates from each other of installation piece.
The utility model discloses a still provide a teaching presentation device for demonstrating current characteristic, include:
a base plate;
the supporting plate is vertically fixed on the bottom plate;
the first demonstration water pipe is fixed on the supporting plate and is surrounded into a rectangular shape;
the two ends of the second demonstration water pipe are respectively connected to the parts, corresponding to the left side and the right side of the rectangle, of the first demonstration water pipe;
the liquid storage tank is supported on the bottom plate and can be used for storing liquid with colors;
the peristaltic pump is supported on the supporting plate or the bottom plate, one end of the first demonstration water pipe is connected with a liquid outlet of the peristaltic pump, the other end of the first demonstration water pipe extends into the liquid storage tank, a liquid inlet pipe is arranged at a liquid inlet of the peristaltic pump, a floating ball is arranged at one end, far away from the peristaltic pump, of the liquid inlet pipe, and the floating ball enables one end, far away from the peristaltic pump, of the liquid inlet pipe to be partially submerged into water.
The utility model discloses a still provide a teaching presentation device for demonstrating current characteristic, include:
a base plate;
the supporting plate is vertically fixed on the bottom plate;
the demonstration water pipes are fixed on the supporting plate, and the first demonstration water pipes are enclosed into a rectangular shape;
the liquid storage tank is supported on the bottom plate and can be used for storing liquid with colors;
the peristaltic pump is supported on the supporting plate or the bottom plate, one end of the demonstration water pipe is connected with a liquid outlet of the peristaltic pump, the other end of the demonstration water pipe extends into the liquid storage tank, a liquid inlet pipe is arranged at a liquid inlet of the peristaltic pump, a floating ball is arranged at one end of the liquid inlet pipe, which is far away from the peristaltic pump, and the floating ball enables one end of the liquid inlet pipe, which is far away from the peristaltic pump, to be partially submerged into water;
and the control valve is arranged on the demonstration water pipe and used for controlling the size of water flow.
Compared with the prior art, the utility model has the following beneficial effect:
the utility model discloses a to electron moving process of electric current, parallelly connected and the presentation device of series characteristic, help the student to understand the characteristic of electric current fast.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a structural view of embodiment 1 of the present invention;
fig. 2 is a schematic diagram of embodiment 1 of the present invention;
fig. 3 is a back view of embodiment 1 of the present invention;
fig. 4 is an enlarged view of the point a of embodiment 1 of the present invention;
fig. 5 is a structural view of embodiment 2 of the present invention;
fig. 6 is a structural view of embodiment 3 of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 to 4, a teaching demonstration device for demonstrating characteristics of electric current comprises a base plate 110, a support plate 120 vertically fixed on the base plate 110, and a first demonstration water pipe 234 and a second demonstration water pipe 232 fixed on the support plate 120, wherein the first demonstration water pipe 234 and the second demonstration water pipe 232 enclose a rectangular shape, and the first demonstration water pipe 232 and the second demonstration water pipe 234 are at least arranged on the left side and the right side of the rectangular shape and are partially arranged above the rectangular shape in the same path, so that when water in different flow directions is injected into the first demonstration water pipe 232 and the second demonstration water pipe 234, the observation can be performed more intuitively.
Furthermore, four supporting bodies 114 are arranged on the supporting plate 120, the four supporting bodies 114 are arranged at the four corners of the rectangle, and the first demonstration water pipe 232 and the second demonstration water pipe 234 are sequentially wound on the four supporting bodies 114, so that the first demonstration water pipe 232 and the second demonstration water pipe 234 can surround the rectangle.
The support plate 120 is a whiteboard which can be written in the prior art, and the first demonstration water pipe 232 and the second demonstration water pipe 234 are disposed on the front surface of the whiteboard, so that comments and the like can be made at corresponding positions as required to facilitate the demonstration.
Further, a first reservoir 241 and a second reservoir 242 are disposed on the base plate 110, and the colors of the liquid in the first reservoir 241 and the second reservoir 242 are different for easy observation. A first peristaltic pump 211 and a second peristaltic pump 212 are arranged on the bottom plate 110 or the support plate 120, one end of the first demonstration water pipe 232 is connected with a liquid outlet of the first peristaltic pump 211, the other end of the first demonstration water pipe extends into the first liquid storage tank 241, a first liquid inlet pipe 231 is arranged at a liquid inlet of the first peristaltic pump 211, and one end, far away from the first peristaltic pump 211, of the first liquid inlet pipe 231 at least partially sinks into liquid of the first liquid storage tank 241. One end of the second demonstration water pipe 232 is connected with the liquid outlet of the second peristaltic pump 212, the other end of the second demonstration water pipe 232 extends into the second liquid storage tank 242, the liquid inlet of the first peristaltic pump 211 is provided with a second liquid inlet pipe 233, the other end of the second liquid inlet pipe 233 at least partially sinks into the liquid of the second liquid storage tank 242, the water flow direction of the first demonstration water pipe 232 is opposite to the water flow direction of the second demonstration water pipe 243, and therefore the moving process of positive and negative charges in the current can be demonstrated, namely the flowing direction of the positive and negative charges is opposite.
Further, for better observation, floating balls 220 are respectively arranged at one end of the first liquid inlet pipe 231, which is far away from the first peristaltic pump 211, and one end of the second liquid inlet pipe 233, which is far away from the second peristaltic pump 212, and the floating balls 220 are configured to partially immerse one end of the first liquid inlet pipe 231, which is far away from the first peristaltic pump 211, and one end of the second liquid inlet pipe 233, which is far away from the second peristaltic pump 212, into the corresponding liquid, so that intermittent bubbles and water columns can be formed in the first demonstration water pipe 232 and the second demonstration water pipe 234, and the direction of the water flow can be observed through the bubbles and the water columns.
Further, a frame 130 is provided on the bottom plate 110 at the back of the support plate 120, and the frame 130 is aligned with the edge of the support plate 120 as viewed in the front-rear direction.
Two mounting blocks 131 which are aligned front and back are fixed on the left side and the right side of the frame 130, and handles 132 are movably connected to the two mounting blocks 131 so as to facilitate the carrying of the device. Both ends of the handle 132 are fixed with a limiting block 1321, and the limiting block 1321 is located on one side of the mounting block 131 deviating from each other to prevent the handle 132 from sliding out of the mounting hole 131. Furthermore, the rib plates are fixed at the left end and the right end of the side of the supporting plate 120 away from the frame 130, and the rib plates are fixedly connected with the bottom plate 110, so that the firmness and the stability of the connection between the supporting plate 120 and the frame 130 are improved.
Example 2
As shown in fig. 5, this embodiment is used to demonstrate the parallel characteristic of the current, and the embodiment is different from embodiment 1 in demonstrating the arrangement of the water pipes.
In this embodiment, a first demonstration water pipe 332 and a second demonstration water pipe 335 are included, the first demonstration water pipe 332 is formed in a rectangular shape, and both ends of the second demonstration water pipe 335 are connected to portions of the first demonstration water pipe 332 corresponding to the left and right sides of the rectangular shape, respectively, so that a parallel circuit is formed. The demonstration tube comprises a peristaltic pump and a liquid storage tank 341, one end of a first demonstration tube 332 is connected with a liquid outlet of the peristaltic pump, the other end of the first demonstration tube extends into the liquid storage tank, a liquid inlet tube 331 is connected with a liquid inlet of the peristaltic pump, a floating ball is arranged at one end, far away from the peristaltic pump, of the liquid inlet tube 331, the floating ball has the same function as that of the floating ball in the embodiment 1, and the function of the floating ball is that spaced water columns and bubbles are generated in the demonstration tube.
When the peristaltic pump works, the water is divided into two at the first connection position where the water flows to the first demonstration pipe 332 and the second demonstration pipe 335, and the two are combined into one at the second connection position, so that the parallel connection characteristic of the current can be demonstrated.
The structure of the other parts in embodiment 2 is the same as that in embodiment 1.
Example 3
This embodiment is intended to demonstrate that the current is the same at each location in the series circuit, as shown in figure 6.
In this embodiment, there is only one demonstration tube 432 and one peristaltic pump, the demonstration tube 432 also encloses a rectangular shape, one end of the demonstration tube 432 is connected with the liquid outlet of the peristaltic pump, the other end of the demonstration tube 432 extends into the liquid storage tank 441, the liquid inlet of the peristaltic pump is connected with a liquid inlet tube, and one end of the liquid inlet tube, which is far away from the peristaltic pump, is also provided with a floating ball, and the function is the same as that in embodiment 1 and embodiment 2. The demonstration tube 432 is also provided with a control valve, the diameter of the demonstration tube 432 can be controlled through the control valve, the demonstration tube 432 is equivalent to the function of a sliding resistor, the water flow speed of the demonstration tube 432 is changed by controlling the opening and closing amount of the control valve, and the demonstration tube can demonstrate that the current at all positions in the series circuit is the same and synchronously changes along with the change of the resistor.
The structure of the other parts in embodiment 3 is the same as that in embodiment 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A teaching demonstration apparatus for demonstrating characteristics of an electric current, comprising:
a base plate;
the supporting plate is vertically fixed on the bottom plate;
first demonstration water pipe and second demonstration water pipe are fixed in the backup pad, and first demonstration water pipe and second demonstration water pipe enclose into rectangular shape to first demonstration water pipe and second demonstration water pipe are at least in the part of the rectangular left and right sides and the partial route of top the same, and the flow direction of first demonstration water pipe and second demonstration water pipe normal water is opposite.
2. A teaching demonstration apparatus for demonstrating characteristics of electric current as claimed in claim 1 wherein said supporting plate is a white board and said first and second demonstration water pipes are provided on the front of the white board.
3. A teaching demonstration device for demonstrating characteristics of electric current according to claim 1 wherein said supporting plate is provided with four supporting bodies, said four supporting bodies are disposed at four corners of said rectangle, said first demonstration water pipe and said second demonstration water pipe are sequentially wound around said four supporting bodies.
4. A teaching demonstration apparatus for demonstrating current characteristics as claimed in claim 1 further comprising:
the first liquid storage tank and the second liquid storage tank are supported on the bottom plate and can be used for storing liquid with different colors;
first peristaltic pump and second peristaltic pump support on backup pad or bottom plate, the one end of first demonstration water pipe with the liquid outlet of first peristaltic pump is connected, and the other end stretches into in the first liquid reserve tank, the inlet of first peristaltic pump is provided with first feed liquor pipe, the one end of keeping away from first peristaltic pump of first feed liquor pipe at least partially submerges into the liquid of first liquid reserve tank, and the one end of second demonstration water pipe is connected with the liquid outlet of second peristaltic pump, and the other end stretches into in the second liquid reserve tank, the inlet of first peristaltic pump is provided with second feed liquor pipe, the other end of second feed liquor pipe at least partially submerges into the liquid of second liquid reserve tank in, the rivers direction of first demonstration water pipe and the rivers opposite direction of second demonstration water pipe.
5. An educational demonstration apparatus for demonstrating characteristics of electric current as claimed in claim 4, wherein floating balls are provided at both the end of the first liquid inlet pipe remote from the first peristaltic pump and the end of the second liquid inlet pipe remote from the second peristaltic pump, the floating balls being configured to partially submerge the end of the first liquid inlet pipe remote from the first peristaltic pump and the end of the second liquid inlet pipe remote from the second peristaltic pump into the respective liquids.
6. An educational demonstration apparatus for demonstrating characteristics of electric current as claimed in claim 1 wherein a frame is provided on the base plate on the back of the support plate, the frame being aligned with the edge of the support plate as viewed in the front-to-back direction.
7. The teaching demonstration device for demonstrating current characteristics according to claim 6, wherein two mounting blocks aligned front and back are fixed on the left side and the right side of the frame, handles are movably connected to the two mounting blocks, limiting blocks are fixed at the two ends of each handle, and the limiting blocks are located on the sides of the mounting blocks, which deviate from each other.
8. A teaching demonstration apparatus for demonstrating characteristics of an electric current, comprising:
a base plate;
the supporting plate is vertically fixed on the bottom plate;
the first demonstration water pipe is fixed on the supporting plate and is surrounded into a rectangular shape;
the two ends of the second demonstration water pipe are respectively connected to the parts, corresponding to the left side and the right side of the rectangle, of the first demonstration water pipe;
the liquid storage tank is supported on the bottom plate and can be used for storing liquid with colors;
the peristaltic pump is supported on the supporting plate or the bottom plate, one end of the first demonstration water pipe is connected with a liquid outlet of the peristaltic pump, the other end of the first demonstration water pipe extends into the liquid storage tank, a liquid inlet pipe is arranged at a liquid inlet of the peristaltic pump, a floating ball is arranged at one end, far away from the peristaltic pump, of the liquid inlet pipe, and the floating ball enables one end, far away from the peristaltic pump, of the liquid inlet pipe to be partially submerged into water.
9. A teaching demonstration apparatus for demonstrating characteristics of an electric current, comprising:
a base plate;
the supporting plate is vertically fixed on the bottom plate;
the demonstration water pipes are fixed on the supporting plate, and the first demonstration water pipes are enclosed into a rectangular shape;
the liquid storage tank is supported on the bottom plate and can be used for storing liquid with colors;
the peristaltic pump is supported on the supporting plate or the bottom plate, one end of the demonstration water pipe is connected with a liquid outlet of the peristaltic pump, the other end of the demonstration water pipe extends into the liquid storage tank, a liquid inlet pipe is arranged at a liquid inlet of the peristaltic pump, a floating ball is arranged at one end of the liquid inlet pipe, which is far away from the peristaltic pump, and the floating ball enables one end of the liquid inlet pipe, which is far away from the peristaltic pump, to be partially submerged into water;
and the control valve is arranged on the demonstration water pipe and used for controlling the size of water flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021596395.3U CN212460936U (en) | 2020-08-05 | 2020-08-05 | Teaching demonstration device for demonstrating current characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021596395.3U CN212460936U (en) | 2020-08-05 | 2020-08-05 | Teaching demonstration device for demonstrating current characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212460936U true CN212460936U (en) | 2021-02-02 |
Family
ID=74476647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021596395.3U Expired - Fee Related CN212460936U (en) | 2020-08-05 | 2020-08-05 | Teaching demonstration device for demonstrating current characteristics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212460936U (en) |
-
2020
- 2020-08-05 CN CN202021596395.3U patent/CN212460936U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210202 Termination date: 20210805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |